News tagged with heart

Related topics: heart attack , heart failure , heart disease , heart muscle , patients

Protein clue to sudden cardiac death

A team led by Oxford University researchers was looking at how a protein, iASPP, might be involved in the growth of tumours. However, serendipitously they found that mice lacking this gene died prematurely ...

Feb 17, 2015
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Researchers find genetic cues for a big heart

Bigger isn't always better, even when it comes to the body's most vital organs. An enlarged or thickened cardiac muscle can actually force the heart to work harder to pump blood throughout the body, weakening ...

Feb 03, 2015
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US advisory group makes recommendations on diet

A U.S. government advisory panel of medical and nutrition experts on Thursday recommended an environmentally friendly diet lower in red and processed meats. But the panel would reverse previous guidance on ...

Feb 19, 2015
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Heart

The heart is a muscular organ in all vertebrates responsible for pumping blood through the blood vessels by repeated, rhythmic contractions, or a similar structure in annelids, mollusks, and arthropods. The term cardiac (as in cardiology) means "related to the heart" and comes from the Greek καρδιά, kardia, for "heart."

The heart of a vertebrate is composed of cardiac muscle, an involuntary striated muscle tissue which is found only within this organ. The average human heart, beating at 72 beats per minute, will beat approximately 2.5 billion times during a lifetime (about 66 years). It weighs on average 250 g to 300 g in females and 300 g to 350 g in males.

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